I don't see an issue here, except that soIt will be interesting to see how the Essential Builds interact with things such as the Eternal Seeker epic destiny, the Bard (which allows easier multiclassing and power swapping,) and the Half-Elf feat (can't remember the name) which essentially does what Seeker does; just at Paragon instead of Epic.
e classes lack certain powers, so they won't be able to switch anything for that level.